linux-kernel - [PATCH] scsi: qedf: Fix potential null pointer dereference

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Message-ID: <20240913033627.1465713-1-liaochen4@huawei.com>
Date: Fri, 13 Sep 2024 03:36:27 +0000
From: Liao Chen <liaochen4@...wei.com>
To: <GR-QLogic-Storage-Upstream@...vell.com>, <linux-scsi@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC: <skashyap@...vell.com>, <jhasan@...vell.com>,
	<James.Bottomley@...senPartnership.com>, <martin.petersen@...cle.com>,
	<njavali@...vell.com>
Subject: [PATCH] scsi: qedf: Fix potential null pointer dereference

qedf is checked to be null in this if branch, accessing its member will
cause a null pointer dereference. Fix it by passing a direct NULL into
the error function.

Fixes: 51071f0831ea ("scsi: qedf: Don't process stag work during unload and recovery")
Signed-off-by: Liao Chen <liaochen4@...wei.com>
---
 drivers/scsi/qedf/qedf_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c
index 4813087e58a1..9d4738db0e51 100644
--- a/drivers/scsi/qedf/qedf_main.c
+++ b/drivers/scsi/qedf/qedf_main.c
@@ -4021,7 +4021,7 @@ void qedf_stag_change_work(struct work_struct *work)
 	    container_of(work, struct qedf_ctx, stag_work.work);
 
 	if (!qedf) {
-		QEDF_ERR(&qedf->dbg_ctx, "qedf is NULL");
+		QEDF_ERR(NULL, "qedf is NULL");
 		return;
 	}
 
-- 
2.34.1